Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6274381 | Method for invisibly tagging petroleum products using visible dyes | Theodore D. Pauls, Susan I. Steuer, Brian Foley, Haresh Doshi | 2001-08-14 |
| 5560855 | Method of tagging and subsequently indentifying refrigerant lubricants | Michael P. Hinton, Peter J. Heffron | 1996-10-01 |